Types of Treatment of Water:

Treatment process of water can be classified into three categories, that is physical, chemical and biological, based on their principle of operation and prevailing quality characteristics of water.

Physical Treatment Processes

Characteristics such as size, density, viscosity, solubility are of importance in physical treatment operations. The chemical nature of the impurities and whether they are living organisms or inanimate objects are not relevant in physical treatment.

Treatments, which are physical in nature, involve:

• Screening and straining,
• Sedimentation,
• Flocculation, and
• Filtration.